SAT (SmartX) is a blockchain technology public chain developed by the SmartX community team. It is a decentralized BlockDAG project that supports Pow mining and a "transaction-based DAG" structure. It can achieve unlimited performance expansion. Equivalent to the traditional blockchain operating system that expands in parallel, it can be expanded in parallel infinitely. Based on the SmartX platform, blockchain technology can be seamlessly applied to products such as encrypted social networking, private communication, game payment, card coupon red envelope points, etc., linking global service providers and users through the blockchain network, and building a network based on social entertainment. A trusted and safe social entertainment ecosystem. The future SmartX platform is a multiple platform of capital flow, information flow, and value flow. In the trust value system built by SmartX, all kinds of people or things transmit their self-worth through the blockchain network, forming a rich value interconnection Network ecology, which will ultimately greatly improve social production efficiency.